To avoid damaging your computer, perform the following steps before you begin
working inside the computer.
1. Ensure that your work surface is flat and clean to prevent the computer
cover from being scratched.
2. Turn off your computer (see Turning Off Your Computer).
CAUTION: To disconnect a network cable, first unplug the cable from your
computer and then unplug the cable from the network device.
3. Disconnect all network cables from the computer.
4. Disconnect your computer and all attached devices from their electrical
outlets.
5. Press and hold the power button while the computer is unplugged to
ground the system board.
6. Remove the cover.
CAUTION: Before touching anything inside your computer, ground yourself by
touching an unpainted metal surface, such as the metal at the back of the
computer. While you work, periodically touch an unpainted metal surface to
dissipate static electricity, which could harm internal components.
Recommended Tools
The procedures in this document may require the following tools:
• Small flat-blade screwdriver
• Phillips screwdriver
• Small plastic scribe
• Flash BIOS update program media
Turning Off Your Computer
CAUTION: To avoid losing data, save and close all open files and exit all open
programs before you turn off your computer.
1. Shut down the operating system:
• In Windows 7:
Click Start
, then click Shut Down.
• In Windows Vista:
8
Содержание OptiPlex 390 Mini-Tower
Страница 1: ...Dell OptiPlex 390 Mini Tower Owner s Manual Regulatory Model D12M Regulatory Type D12M001 ...
Страница 6: ...6 ...
Страница 10: ...10 ...
Страница 12: ...12 ...
Страница 18: ...18 ...
Страница 32: ...32 ...
Страница 36: ...8 Pry the power switch cable free 9 Slide the power switch cable out through the front of the computer 36 ...
Страница 38: ...38 ...
Страница 46: ...46 ...
Страница 50: ...50 ...
Страница 52: ...7 Remove the screws that secure the system board to the computer 52 ...
Страница 53: ...8 Slide the system board towards the front of the computer 53 ...
Страница 54: ...9 Carefully tilt the system board to 45 degrees and then lift the system board out of the computer 54 ...
Страница 55: ...55 ...
Страница 68: ...68 ...
Страница 90: ...90 ...
Страница 92: ......